Window-lock.



H. B. BURDICK.

WINDOW LOCK.

APPLICATION FILED MAY 16, 1911.

Patented Nov. 21, 1911.

COLUMBIA PLANOORAPN 430-. WASHINGTON, D. c.

HIRAM B. BURDICK, 0F PORT BYRO,N, NEW YORK.

WIND OW-LOCK.

Specification of Letters Patent.

Patented Nov. 21, 1911.

Application filed May 16, 1911. Serial No. 627,481.

To all whom it may concern:

Be it known that I, HIRAM B. BURDIoK,

a citizen of the United States, residing at Port Byron, in the county of Cayuga, State of New York, have invented certain new and useful Improvements in Window-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to window locks, and has for an object to provide a device of this character that will simultaneously lock both sashes against rattling, and will lock both sashes against being opened from the outside.

A second object is to provide a simple and inexpensive device of this character in which a single rubber tipped set screw will be employed in holding both sashes in intimate contact so as to prevent rattling, and also permit of both sashes being opened to any desired degree and there locked.

A third object is to provide a window lock in the nature of an angular bracket which will have a right-angular standard swiveled thereto, the standard being equipped with a sliding sleeve which may be selectively engaged over the lower sash alone to prevent raising of this sash, or over both the lower sash and into a counter-sunk socket member in the upper sash so as to positively prevent opening of either sash.

With the above objects in view the invention consists in certain novel details of construction and combination of parts hereinafter fully described it being understood that various modifications may be made in the minor details of construction within the scope of the appended claims.

In the accompanying drawing forming part of this specification :-Figure 1 is a detail perspective view of the window lock in operative position for simultaneously locking both sashes and holding the same against rattling. Fig. 2 is a longitudinal sectional view through the device with the set screw removed. Fig. 3 is a detail perspective view of the set screw and its rubber tip. Fig. 4 is a longitudinal sectional view through the socket member.

Referring now to the drawing in which like characters of reference designate similar parts, a fragmentary window casing is shown comprising a side stile 10, upper sash 11, and lower sash 12, the sashes being separated by the usual parting stop 13, and being guided in their sliding movements by inner and outer guide strips 14, the outer guide strip not being shown.

The window lock comprising the subjectmatter of this invention consists of an angle iron bracket 15 one leg of which is provided with suitable openings for the reception of wood screws or the like 16 for rigidly securing the bracket to the guide strip 14. The free leg of the bracket is terminally equipped with a tubular internally threaded bearing 17 in which is carried a set screw 18, this set screw being equipped at its tip with a swivel head 19 which works in a metal bearing 20 em bedded in the rear face of a rubber or similar disk 21. Upon advance of the set screw, this yielding disk bears against the lower sash without marring the same, and forces the lower sash into intimate contact with the upper sash so that rattling is prevented. Swivelly mounted in the free leg of the bracket is a standard 22, this standard being rightangular, that is to say, inverted L- shape in outline, the upright leg of the standard being provided with a reduced neck 23 which is engaged through a suitable opening in the bracket leg and is then headed up as shown at 2 to prevent withdrawal of the standard. Slidingly fitted on the free leg of the standard is a sleeve 25 which is of sutlicient size to extend transversely across the top edge of the lower sash and engage with its tip the upper sash, the central portion of the sleeve being knurled or roughened as shown at 26 to facilitate manual sliding of the sleeve.

Embedded in a suitable countersink formed in the upper sash is a metal socket member 27 which is provided with a socket 28 of sufficient size to receive the tip of the sleeve 25. When the sleeve is slid outwardly upon the standard and into the socket member, the upper sash is locked to the bracket and held against movement up or down, while the lower sash is prevented from being raised by virtue of the sleeve being engaged over its top edge as clearly shown in Fig. 1. Should it not be desired to maintain both sashes against being opened, the sleeve may be slid rearwardly on the standard to such an extent as to only bear upon the lower sash, thus leaving the upper sash free to be moved in either direction. When it is desired that both sashes be opened, the standard may be swung outwardly into the position shown in dotted lines in Fig. 1 so that the sleeve will not obstruct movement of either sash. It will be further noted, and it is deemed of importance, that the lower sash may be raised to any desired degree, then by advancing the set screw, the lower sash is forced tight enough against the upper sash to maintain it at the desired height until the set screw is retracted. Likewise the upper sash may be lowered and maintained in any position desired by manipulation of the set screw in the same manner as when adjusting the lower sash. Also both sashes may be simultaneously opened to any desired degree and locked in this position by manipulation of the set screw as above described.

The device is herein shown attached to the right hand stile of a window casing, and in order to attach the device to the left hand stile, it is simply necessary to remove the set screw, and insert it through the tubular bearing in the opposite direction from that shown.

hat is claimed, is

1. A window lock including a bracket, a right-angular standard swiveled on said bracket, and a sliding sleeve on one leg of said standard engageable with the top edge of the lower sash and terminally engageable with the upper sash.

2. A window lock including an angular bracket, a swinging angular locking stand ard on one leg of said bracket, said standard having an extensible leg engageable over the top edge of the lower sash, and terminally engageable with the upper sash, and a set screw carried by said bracket leg engageable with said lower sash.

3. A window lock including an angular bracket having means on one leg for attachment to a window casing, a swiveled angular standard on the free leg of said bracket, a sliding sleeve on said standard engageable over the top edge of the lower sash and terminally engageable with the upper sash, said free leg of the standard terminating in a threaded eye bearing, and a set screw in said bearing having a yielding tip engageable with said lower sash.

In testimony whereof, I aflix my signature, in presence of two witnesses.

HIRAM B. BURDIGK.

lVitnesses H. R. WVARREN, FRANK H. LOWE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

